Unfortunately, there's no method to gauge whether you'd get the Visa or retail card.
Assuming your profile is clean, FICO scores over 700, DTI is in check and not a lot of recent accounts, then it's likely you'd qualify for the Visa.
Potentially, if the letter is a verification request, then you can decide how to proceed. Their disclaimer basically states you'd be considered for the Visa, but if you don't meet certain UW criteria then you'd be considered for the store card. You can't choose, unfortunately.
Hopefully, the letter might reveal something positive.